2. 外语
  3. The frame needs to be strong enough to support the engine.

The frame needs to be strong enough to support the engine.

admin2014-03-28  98
问题 The frame needs to be strong enough to support the engine.
选项 A、bottom
B、surface
C、top
D、structure
答案D
解析 句意为：构造需要足够强大到支持引擎。frame“结构，构造”，四个选项；bottom“底部”；surface“表面”；top“顶端”；structure“结构”。
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